login / can’t find a style

hi,

I’m creating a new theme based on the default theme. Now I’m in a process of editing the login page. When I preview the source I can see that the style ‘backtoblog’ is used to style the top region:

<p id=”backtoblog”>

« Back to mywebsite
</p>

I would like to change the color from existing #464646 to something else but I can’t seem to locate the right spot to do it.
I only found:

#backtoblog a {} (in login.php and login-rtl.php)

however, backtoblog a {} only changes the link background color… I need to change the color of the paragraph but I can’t locate #backtoblog style…

could anyone please help to locate it to point me how to change the background color of the above mentioned region?

Thanks in advance!